Hitachi, Ltd.

Hitachi Car Engineering Co., Ltd.

Other

Hitachi Automotive Engineering Co., Ltd.

Hitachi Metals, Ltd.

Suetaro Shibukawa

Fumio Tajima

Osamu Koizumi

Shouichi Kawamata

Keiji Oda

Yutaka Matsunobu

Yutaka Matsunobe

Takashi Kobayashi

Yukinori Taneda

Yuji Enomoto

Noriaki Yamamoto

Keijiro Oda

Sanshiro Obara

Masaharu Senoh

Takeshi Atago

Takashi Ishigami

Keiichi Mashino

Toshiaki Ueda

Motoya Ito

Takashi Yasuhara

Shigeyuki Yoshihara

Hiroshi Katada

Masakatsu Fujishita

Toshihiko Sakai

Hiromichi Hiramatsu

Yasuhiko Kimura

Kiyoshi Hirano

Hideki Nakamura

Ryoso Masaki

Shigeki Morinaga

Shotaro Naito

Masashi Kitamura

Kiyoshi Yamaguchi

Hiroshi Hamano

Nobunori Matsudaira

Hakaru Sasaki

Shinichiro Yokoyama

Yoshikazu Kadowaki

Shoichi Kawamata

A magnetic gap is provided between a permanent magnet of a rotor and an auxiliary magnet pole portion which is arranged adjacent to the permanent magnet in a peripheral direction. A gradual change in a magnetic flux density distribution of a surface of the rotor is obtained and a cogging torque and a torque pulsation are restrained. By obtaining a reluctance torque according to the auxiliary magnetic pole, a permanent magnet electric rotating machine in which the cogging torque and the torque pulsation are restrained can be obtained and further an electromotive vehicle having the permanent magnet electric rotating machine can be provided.

Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine

A rotating electric machine comprises a stator having stator salient poles, three-phases windings would around said stator salient poles, a rotor rotatable held inside the said stator, and permanent magnets inserted into said rotor and positioned opposite to said stator salient poles. The three-phase windings are concentratively wound around each of the stator salient poles, with windings of each phase wound around at more than one stator salient pole. The windings of each phase have a phase difference of voltage between at least one of the windings and the other.

Driving apparatus

A rotating electric machine comprises a stator having stator salient poles, three-phases windings wound around said stator salient poles, a rotor rotatable held inside the said stator, and permanent magnets inserted into said rotor and positioned opposite to said stator salient poles. The three-phase windings are concentratively wound around each of the stator salient poles, with windings of each phase wound around at more than one stator salient pole. The windings of each phase have a phase difference of voltage between at least one of the windings and the other.

A rotating electric machine comprises a stator having stator salient poles, three-phase windings wound around said stator salient poles, a rotor rotatable held inside the said stator, and permanent magnets inserted into said rotor and positioned opposite to said stator salient poles. The three-phase windings are concentratively wound around each of the stator salient poles, with windings of each phase wound around more than one stator salient pole. The windings of each phase have a phase difference of voltage between at least one of the windings and the other.

Vehicle

A rotating electric machine comprises a stator having stator salient poles, three-phases windings wound around the stator salient poles, a rotor rotatable held inside the stator, and permanent magnets inserted into the rotor and positioned opposite to the stator salient poles. Three-phase windings, which are concentratively wound around each of the stator salient poles, are wound around more than one stator salient pole. The windings of each phase have a phase difference of voltage between at least one of the windings and the other.

Rotating electric machine

A rotating electric machine comprises a stator having stator salient poles, three-phases windings wound around said stator salient poles, a rotor rotatable held inside the said stator, and permanent magnets inserted into said rotor and positioned opposite to said stator salient poles, wherein said three-phase windings are concentratively wound around each of said stator salient poles, said windings of each phase are wound around at more than one stator salient p9ole, and said windings of each phase have a phase difference of voltage between at least one of the windings and the other.

Permanent magnet rotating electric machine and electrically driven vehicle employing same

Each of a plurality of unit windingsis formed by being divided into a first winding sectionhaving opened end portions and a second winding section, and the first winding sectionis shaped in such a manner that a step in radial direction of a stator coreis formed between opposing side sectionsandand the opened end sections are bent in the crossing over direction of the winding so that open endsandof the opened end sectionsoppose each other in the radial direction of the stator core, then the open endsandare connected by winding conductor piecesandof the second winding section to complete the unit winding, thereby, end sections of a stator winding are shortened and a small size dynamo electric machine is realized.

Dynamo electric machine and method of manufacturing the same

Growing community of inventors

Hitachinaka, Japan

Suetaro Shibukawa